NPPES file of Aug 9, 2026

Chih-Hong Young, M.D.

Hematology & Oncology Physician · Corona, CA

Chih-Hong Young, M.D. is a hematology & oncology physician with a practice address in Corona, California, and NPI 1417919572, issued on Apr 4, 2006. Check the license (California A39800, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1417919572
Name
Chih-Hong Young
Credential
M.D.
Primary taxonomy
Hematology & Oncology Physician 207RH0003X
License number
A39800 CA
Self-reported in NPPES; status is on the state search
Practice location
900 S Main St Ste 109, Corona, CA 92882
Phone
(951) 272-0700
Enumerated
Apr 4, 2006
Record last updated
Sep 12, 2017 (not updated in 9 years: call before relying on the address or phone)
Medicaid ID
00A398000 CA
Medicare enrollment
Enrolled (PECOS I20101021000844); accepts Medicare assignment
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Verify Chih-Hong Young in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license A39800
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the California license search

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38% more Medicare Part D claims than the average hematology & oncology physician in 2024

1,210 Medicare Part D claims for 66 beneficiaries, against an average of 877 among the 10,784 providers of this specialty who prescribed in Part D. 73 claims were for opioids.

  1. Chih-Hong Young1,210
  2. Specialty average877

Most prescribed

  1. Lisinopril56 claims
  2. Levothyroxine Sodium47 claims
  3. Metformin Hcl46 claims
  4. Tramadol Hcl37 claims
  5. Alprazolam34 claims
  6. Pioglitazone Hcl33 claims

Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.

Chih-Hong Young among 1,583 hematology & oncology physician records in California

Chih-Hong Young, M.D. is one of 1,583 hematology & oncology physician records with a practice address in California. 83% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 8% of them.

  • NPI issued2006 · 8% of these records are older, 54% newer
  • In a Medicare fileYes · 83% of these records are
  • In the CMS Doctors and Clinicians fileYes · 71% of these records are
  • Graduated1980 · median 2003 among the 1,124 with a school on file
  • Record last updated2017 · 58% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RH0003X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Hematology & Oncology Physician providers in California

There are 1,583 hematology & oncology physician records in California.

The 8 hematology & oncology physician records with the nearest ZIP codes

  1. Gregory Gilmore, D.O.Corona, CA 928821205271640
  2. Rahul Dev Polineni, M.DCorona, CA 928821235375155
  3. Rehana Baqai, M.D.Corona, CA 928791164478855
  4. Hussein Merza, MDCorona, CA 928791235409673
  5. Mohammadbagher Ziari, MDCorona, CA 928791962601047
  6. Matthew Keating, M.D.Yorba Linda, CA 928861275948481
  7. Zhaohui Arter, MDOrange, CA 928681184116451
  8. April Choi, MDOrange, CA 928681154825800

Common questions

What is Chih-Hong Young, M.D.'s NPI number?

Chih-Hong Young, M.D.'s National Provider Identifier (NPI) is 1417919572, issued on Apr 4, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Chih-Hong Young, M.D. located?

The NPPES record lists a practice address at 900 S Main St Ste 109, Corona, CA, 92882. Phone: (951) 272-0700. Providers update this record themselves, so call before visiting.

How can I verify Chih-Hong Young, M.D.'s license?

NPPES lists California license number A39800, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does Chih-Hong Young, M.D. prescribe under Medicare Part D?

In 2024, Chih-Hong Young, M.D. had 1,210 Medicare Part D claims for 66 beneficiaries; the average among hematology & oncology physician prescribers was 877. Part D covers Medicare prescriptions only.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.